Network Slicing

Table 1. Feature History

Feature Name

Release Information

Description
Cellular Network Slicing

Cisco IOS XE Catalyst SD-WAN Release 17.16.1a

Cisco Catalyst SD-WAN Manager Release 20.16.1

This feature allows multiple networks to exist on the same physical network to optimize the network for different traffic types.

Information about Network Slicing

Network slicing refers to partitioning a physical network into multiple virtual parts, called slices. The network slicing solution allows service providers to partition a 5G physical network into multiple virtual network slices. Using this feature, a host platform can set up multiple simultaneous network connections, each with its own IP address, using slice types that are suited to each of the host requirements. This approach allows service providers to allocate dedicated resources for different types of services for optimal performance and efficiency.

5G network slicing is supported only on 5G standalone networks. It is not available on 5G non-standalone (NSA) networks. The slice or service types have a specific set of network functions and resources defined by the network provider. Service type defines the expected behavior of a network slice in terms of its features and services. These service types are supported in network slicing:

  • Enhanced Mobile Broadband (eMBB): for high-bandwidth and low-latency applications.

  • Ultra-reliable low latency communications (URLLC): for high reliability and low latency transmission requirements.

  • Massive Internet of Things (MIoT): for sending small quantities of data.

Restrictions for Network Slicing

  • You can enable network slicing for cellular profile only on P-5GS6-R16SA-GL module in 5G standalone mode.

  • Configuring network slicing parameters on profile one or the default profile for the carrier is not allowed.

Configure Network Slicing

Before You Begin

Create a configuration group for Cisco Catalyst Cellular Gateways using Workflows > Create Cellular Gateway Group. On the Configuration Groups page, the resulting configuration group is labelled cellular gateway in the Device Solution column.

For information about creating configuration groups and applying them to devices, see the Using Configuration Groups section of Cisco Catalyst SD-WAN Configuration Groups, Cisco IOS XE Catalyst SD-WAN Release 17.x.

  1. From the Cisco SD-WAN Manager menu, choose Configuration > Configuration Groups.

  2. Create a Configuration Group. A new configuration group is created.

  3. In the configuration group, click Add Profile.

  4. Choose Transport & Management Profile from the drop-down list.

  5. Click Edit to add features to the Transport and Management profile.

  6. Click Add New Feature.

  7. Choose Cellular Controller from the Add Feature drop-down list.

  8. Choose Cellular Profile from the Add Fetaure drop-down list.

    Table 2. Cellular Settings

    Field

    Description

    Primary Slot

    Choose a SIM slot to designate it as primary.

    Range: 0, 1

    Default: 0

    SIM SLOT 0 Cellular Profile

    Profile Id

    Profile ID.

    You can click Add to add multiple profiles.

    Access Point Name

    Access point name, from your service provider.

    Authentication Method

    Authentication method (none, pap, chap, pap_or_chap) indicated by your service provider.

    Username

    Username for authentication, as indicated by your service provider.

    Password

    Password for authentication, as indicated by your service provider.

    Packet Data Network Type

    Packet data network type (IPv4, IPv6, IPv4v6), as indicated by your service provider.

    Attach Profile

    Choose a attach profile from the defined profiles.

    Data Profile

    Choose a data profile from the defined profiles. You can use the same profile for the attach profile and data profile.

    SIM SLOT 1 Cellular Profile

    See the fields described for SIM slot 0.

  9. For the configured Cellular Controller, choose the Cellular Profile or click Add New to add a new cellular profile.

  10. Configure Cellular Profile using the following table.

    Table 3. Cellular Profile Settings

    Field

    Description

    Type

    Choose a feature from the drop-down list.

    Feature Name

    Enter a name for the feature. The name can be up to 128 characters and can contain only alphanumeric characters.

    Description

    Enter a description of the feature. The description can be up to 2048 characters and can contain only alphanumeric characters.

    Profile ID

    Enter the identification number of the profile to use on the router.

    Range: 1 through 15

    Access Point Name

    Enter the name of the gateway between the service provider network and the public internet. It can be up to 32 characters long.

    Authentication

    Choose the authentication method used for the connection to the cellular network. It can be none, pap, chap, or pap_chap.

    Profile Username

    Enter the username to use when making cellular connections for web services. It can be 1 to 32 characters. It can contain any alphanumeric characters, including spaces.

    Profile Password

    Enter the user password to use when making cellular connections for web services. The password is case-sensitive and can be clear text, or an AES-encrypted key.

    From Cisco Catalyst SD-WAN Manager Release 20.15.1, when you enter the password as clear text, Cisco SD-WAN Manager encrypts the password. When you view the configuration preview, the password appears in its encrypted form.

    Packet Data Network Type

    Choose the packet data network (PDN) type of the cellular network. It can be IPv4, IPv6, or IPv4v6.

    No Overwrite

    Enable this option to overwrite the profile on the cellular modem. By default, this option is disabled.

    Slice Type

    Choose the network slice type (SST) for the profile. The options are:

    • eMBB: Enhanced Mobile Broadband, used for high data throughput.

    • URLLC: Ultra-Reliable Low Latency Communication, used for high reliability and low latency transmission.

    • MIoT: Massive IoT, used for many devices transmitting small quantities of data.

    Slice Differentiator

    Enter the slice differentiator (SD) for the profile. This is an optional value that enables the user equipment (UE) to use multiple slice instances of the same SST.

    Range: 0 through 16777214

    Slot

    Enter the associated SIM slot for the profile.

Configure Cellular Network Slicing Using CLI

The following example shows how to configure a cellular network slicing using a CLI.

Device(config-controller)# profile id 3 apn apn-ns authentication none pdn-type ipv4      
   no-overwrite  
   slot            Associated sim slot
   slice-type Associated network slice type(SST)
   
Device(config-controller)# profile id 3 apn apn-ns authentication none pdn-type ipv4 slice- type 
<1-3>  Slice type number: 1(eMBB), 2(URLLC), 3(MioT)
Device(config-controller)# profile id 3 apn apn-ns authentication none pdn-type ipv4 slice- type embb
   slice-differentiator Associated Slice Differentiator(SD)  <--- if SD is bypassed here,"FF FF FF" wll be used internally as the SD to indicate that there is no SD associated with this SST.
   slot                            Associated sim slot  
 
Device(config-controller)# profile id 3 apn apn-ns authentication none pdn-type ipv4 slice type 
embb slice-differentiator
  <0-16777214>  Slice Differentiator
Device(config-controller)#
Device(config-controller)#$ pdn ipv6  slice-type miot slice-differentiator 6 
  slot  Associated sim slot

Verify Cellular Network Slicing Configuration

The following is a sample output from the show cellular command that displays network slicing configuration and slice type details:
Device# show cellular profile 6  

Profile 6 = INACTIVE
--------  
PDP Type = IPv6
Access Point Name (APN) = TestNSSAI6_URLLC1
Authentication = None
S-NSSAI Slice Type is URLLC
S-NSSAI Slice Differentiator = 1